Here's what I think:
- It was ambitious. That's good.
- It seemed well planned.
- The music rocked.
- The animation was Ok, but it had tons of set bumps.

It worked. It did the trick.

I'd recommend that you join one of these three sites. Users there will give you serious tips on how to improve as well as tips on effects and techniques to make your films better. All are dedicated to the art of stop motion using legos.